smoothing ve table?
Thread Starter
Joined: Mar 2003
Posts: 8,319
Likes: 1
From: North Carolina
smoothing ve table? ok so once i get the VE table half way sorted out, could i use polynomial smoothing and then go relog and see whats gonig on? im not sure on how to use that function yet.
Yes, but you need to give the computer time to adjust to the new settings, be sure to reset the fuel trims. After about 30 minutes or so, you should start seeing more accurate data to base your new changes from. That is how I am doing it.
Thread Starter
Joined: Mar 2003
Posts: 8,319
Likes: 1
From: North Carolina
yeah, i really plan on getting about 3 or 4 logs in and change the VE table, then try and smooth, reset trims, go back out for some more logs and see what goes on. i just wanted to make sure i understood that function. this hp tuners is cool, just a lot of stuff to learn, right now im still at the beginning parts of tuning lol
I did this when I was fiddling mine and the big-cam car I
worked on. My opinion is that there should be no sharp
discontinuities, though the stock table looks pretty jerky
in spots. The flow, should flow, so to speak. In fact I hit
the smooth button a bunch of times until it looked all
pretty. Though I can't say whether it helped any, it just
seems unnatural to me that you'd have any spikes or
ridges or potholes in the surface.
worked on. My opinion is that there should be no sharp
discontinuities, though the stock table looks pretty jerky
in spots. The flow, should flow, so to speak. In fact I hit
the smooth button a bunch of times until it looked all
pretty. Though I can't say whether it helped any, it just
seems unnatural to me that you'd have any spikes or
ridges or potholes in the surface.
Thread Starter
Joined: Mar 2003
Posts: 8,319
Likes: 1
From: North Carolina
yeah i was looking at some of the tables and i would think that it would have to be nice and smooth. i dont see how at one rpm and one map it can spike and then go back down, like you said it looks unnatural.
I am tuning my car in open loop and have spikes all throughout the table. If I smooth it, my afr changes drastically. I feel that for my application, a spikey graph is the best. Now for a closed loop tune, then I smooth it like described above.
I am also against a smooth as a babies *** ve table. If you are tuning with a wb and dialing the car in for a specific AFR and adjust the ve table accordingly for what the motor needs, then go back and smooth it you will be tuning for ever. The only drawback i see to a spikey table is burst knock, once you tone down the burst knock parms you wont have to worry about it.
My ve table looks like **** comapred to some i have seen on the site
My ve table looks like **** comapred to some i have seen on the site
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Mine is pretty spikey too. There are way to many variables that effect the motors VE. Best thing you can do is get the trims in order and not smooth it. The spikes you are seeing represent the real life data your motor sees.
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Originally Posted by TAQuickness
Mine is pretty spikey too. There are way to many variables that effect the motors VE. Best thing you can do is get the trims in order and not smooth it. The spikes you are seeing represent the real life data your motor sees.
Couldnt agree more!!!!! This applies for open loop and closed loop......
Thread Starter
Joined: Mar 2003
Posts: 8,319
Likes: 1
From: North Carolina
can someone explain burst knock and how to fix it if i do have it, i have seen this mentioned a few tiems but have no clue what it is. i would imagine low rpm knock?? can someone help?
